how many cubic metres of earth must be dug out the constructors well 7 M Deep and diameter 2.8 m
Answers
Answered by
1
diameter =2.8m
radius = 2.8/2 =1.4m
height=7m
volume=πr^2 h= 22/7×1.4×1.4×7
=22×1.4×1.4
=43.12 cubic metres
radius = 2.8/2 =1.4m
height=7m
volume=πr^2 h= 22/7×1.4×1.4×7
=22×1.4×1.4
=43.12 cubic metres
Answered by
1
H= 7m;
r=1.4m;
earth dug out=volume of cylinder=22/7*r*r*h;
= 22/7*1.4*1.4*7;
= 43.12m^3
hence 43.12 m^3 of earth is dug out
r=1.4m;
earth dug out=volume of cylinder=22/7*r*r*h;
= 22/7*1.4*1.4*7;
= 43.12m^3
hence 43.12 m^3 of earth is dug out
Similar questions